<?php

/**
 * Zend Framework
 * LICENSE
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 * @category Zend
 * @package Zend_Log
 * @subpackage Filter
 * @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
 * @license http://framework.zend.com/license/new-bsd New BSD License
 * @version $Id: Priority.php 22662 2010-07-24 17:37:36Z mabe $
 */
/**
 * Zend_Log_Filter_Abstract
 */
// require_once 'Zend/Log/Filter/Abstract.php';
/**
 *
 * @category Zend
 * @package Zend_Log
 * @subpackage Filter
 * @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
 * @license http://framework.zend.com/license/new-bsd New BSD License
 * @version $Id: Priority.php 22662 2010-07-24 17:37:36Z mabe $
 */
class Zend_Log_Filter_Priority extends Zend_Log_Filter_Abstract {

    /**
     *
     * @var integer
     */
    protected $_priority;

    /**
     *
     * @var string
     */
    protected $_operator;

    /**
     * Filter logging by $priority.
     * By default, it will accept any log
     * event whose priority value is less than or equal to $priority.
     * @param integer $priority Priority
     * @param string $operator Comparison operator
     * @throws Zend_Log_Exception
     */
    public function __construct ($priority, $operator = NULL) {
        if ( ! is_integer ($priority)) {
            // require_once 'Zend/Log/Exception.php';
            throw new Zend_Log_Exception ('Priority must be an integer');
        }
        $this -> _priority = $priority;
        $this -> _operator = $operator === null ? '<=' : $operator;
    }

    /**
     * Create a new instance of Zend_Log_Filter_Priority
     * @param array|Zend_Config $config
     * @return Zend_Log_Filter_Priority
     * @throws Zend_Log_Exception
     */
    static public function factory ($config) {
        $config = self::_parseConfig ($config);
        $config = array_merge (array('priority' => null, 'operator' => null), $config);
        // Add support for constants
        if ( ! is_numeric ($config['priority']) && isset ($config['priority']) && defined ($config['priority'])) {
            $config['priority'] = constant ($config['priority']);
        }
        return new self ((int) $config['priority'], $config['operator']);
    }

    /**
     * Returns TRUE to accept the message, FALSE to block it.
     * @param array $event event data
     * @return boolean accepted?
     */
    public function accept ($event) {
        return version_compare ($event['priority'], $this -> _priority, $this -> _operator);
    }

}
